Color Identity: B

Prerequisites

  1.  
    Necrotic Ooze
    Necrotic Ooze     and
    Phyrexian Altar
    Phyrexian Altar     on the battlefield.
  2.  
    Endling
    Endling     and
    Walking Ballista
    Walking Ballista     in your graveyard.
  3. ({B} magic symbol)   available.

Steps

  1. Activate
    Necrotic Ooze
    Necrotic Ooze     using
    Endling
    Endling    's third ability by paying ({B} magic symbol)  , giving
    Necrotic Ooze
    Necrotic Ooze     undying until end of turn.
  2. If
    Necrotic Ooze
    Necrotic Ooze     has any +1/+1 counters, activate it using
    Walking Ballista
    Walking Ballista    's second ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
  3. Repeat step 2 until
    Necrotic Ooze
    Necrotic Ooze     has no +1/+1 counters.
  4. Activate
    Phyrexian Altar
    Phyrexian Altar     by sacrificing
    Necrotic Ooze
    Necrotic Ooze    , adding ({B} magic symbol)  .
  5. Necrotic Ooze
    Necrotic Ooze     dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. Repeat.

Results

  1. Infinite damage.
  2. Infinite death triggers.
  3. Infinite ETB.
  4. Infinite LTB.
  5. Infinite sacrifice triggers.

Metadata

  1. In 29 decks according to EDHREC.
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